SS-31

Identity

Field	Value
IUPAC name	(2S)-6-amino-2-[[(2S)-2-[[(2R)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-3-(4-hydroxy-2,6-dimethylphenyl)propanoyl]amino]-N-[(2S)-1-amino-1-oxo-3-phenylpropan-2-yl]hexanamide
SMILES	CC1=CC(=CC(=C1C[C@@H](C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC2=CC=CC=C2)C(=O)N)NC(=O)[C@@H](CCCN=C(N)N)N)C)O
InChI	InChI=1S/C32H49N9O5/c1-19-15-22(42)16-20(2)23(19)18-27(41-29(44)24(34)11-8-14-38-32(36)37)31(46)39-25(12-6-7-13-33)30(45)40-26(28(35)43)17-21-9-4-3-5-10-21/h3-5,9-10,15-16,24-27,42H,6-8,11-14,17-18,33-34H2,1-2H3,(H2,35,43)(H,39,46)(H,40,45)(H,41,44)(H4,36,37,38)/t24-,25+,26+,27+/m1/s1
InChIKey	SFVLTCAESLKEHH-WKAQUBQDSA-N

Field	Value
Compound class	Tetrapeptide (4 aa, mitochondrial-targeting)
Formula	C₃₂H₄₉N₉O₅
Molecular weight	639.79
CAS	736992-21-5
PubChem	PubChem CID 11764719 (opens in a new tab)

Computed conformer: one plausible shape of a flexible molecule, not a measured structure · RDKit

Additional properties

Computed
Property	Value
Exact mass	639.38566570 Da
Monoisotopic mass	639.38566570 Da
XLogP3	0
Topological polar surface area	267 Å²
Hydrogen bond donors	9
Hydrogen bond acceptors	8
Rotatable bonds	19
Heavy atoms	46

Also known as

Elamipretide, bendavia, Ocuvia, MTP-131, Szeto-schiller peptide, Elamipretida, Nh2-d-arg-dmt-lys-phe-nh2, RX 31

Identifiers

Sources

Data sources
Source	Kind	Retrieved
PubChem CID 11764719 (opens in a new tab)	PubChem	Oct 12, 2026
Computed conformer (RDKit ETKDGv3 + MMFF94)	Internal	Oct 12, 2026

Products containing this compound

Listed products
Product	Milligrams
SS-31	entire fill